Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 14
39. A polygon of five sides is called apentagon. … 40. A polygon of six sides is calledhexagon. 41. A polygon ot seven sides is called a heptagon 42 A polygon of eight sides is called an octagon.2 14 GEOMETRY De f in it jo ns. 43. A polygon of nine sides is called a nonagon. 44. A polygon of ten sides is called a decagon. 45. A polygon of twelve…
Geometry · Plane trigonometry
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